#31 – UIElement Class

The UIElement class inherits from Visual and adds support for basic user interaction behavior, including:

• Layout behavior
  • Parent/child relationship
  • Measure/Arrange passes
• Responding to user Input
  
  • Input events from devices like keyboard/mouse
  • Command bindings
• Manage Focus
• Raise (and respond to) routed Events
  • Events bubble (up) or tunnel (down) element tree

Note the acronym formed, which helps in thinking about UIElement – “LIFE begins at UIElement“.